Low power circuit for reducing leakage power using negative voltage

A power circuit comprising:

• a current source comprising a current source transistor comprising a current source gate;
• and
• a current source control circuit comprising a first sub control circuit, a capacitor having an upper node and a lower node, and a second sub control circuit,
• wherein the first sub control circuit comprises:
• a first transistor configured to pass a supply voltage to the upper node when the current source is active, and to isolate the upper node from the supply voltage when the current source is inactive;
• a second transistor configured to isolate the upper node from a ground when the current source is active, and to ground the upper node when the current source is inactive,
• wherein the second sub control circuit comprises:
• a series of at least a fourth transistor and a fifth transistor configured to ground the lower node when the current source is active, and configured to isolate the lower node from the ground when the current source is inactive;
• and
• a sixth transistor configured to isolate the lower node from the current source gate when the current source is active, and configured to electrically connect the lower node to the current source gate when the current source is inactive, wherein a negative voltage is generated in the lower node when the current source is inactive, and wherein a duration of the negative voltage is based on a total number of the series of at least the fourth transistor and the fifth transistor.